I've just spotted that the Home Office recently announced that machines capable of detecting whether a motorist has taken drugs will be in police stations by the end of 2013.

This is another key plank of the Lillian's Law campaign, following the inclusion of legislation to change the law relating to drug driving in the Queen's Speech. The new law will only be effective if the police can quickly and accurately test the level of drugs in a suspect's system ideally at the roadside (as they can do for alcohol via a breathalyser) and certainly at police stations. At the moment, the only way to do this is to ask a doctor to attend the police station and take a blood sample from the suspect for analysis, a time consuming process which is therefore rarely used.

I’m told the aim is to have roadside devices in use by the end of 2014.

This is great news for the Groves family who have campaigned with such dignity for changes to ensure that other families don't have to go through what they have been through - and for road safety generally.